I need help with some math questions! Will give brainliest! -FInd the degree of 12m^7n
-Find the sum of 6r^3+7r^3
-Find the difference of 23u^2v - 19u^2v
-Factor 2x(4x^2 - 7x + 6)
-Simplify using the table method (x-2)(3x-4)

Explain how you can use the associative property to evaluate (7x50)x4.

Lines b and c are parallel. what is the measure of 2? m2 = 31° m2 = 50° m2 = 120° m2 = 130°

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.